Flask



T. F. IENNINGS.

APPLICATION EILLAEK'MAY 15, 19H3. l 222,022., Patented. Nov. 18, 1919;

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FLASK.

Speccation of Letters Patent. lajengled NOV. 18, 1919.

Application filed May 15, 1918. Serial No. 234,612.

To all whom t may concern: l

Be it known that I, TI-IoMAs F. JEN RINGS, a citizen of the UnitedStates, residing at Garfield, in the county of Salt Lake and State ofUtah, have invented certain, new and useful Improvements in Flasks, ofwhich the following is a specification.

This invention relates to an improvement in flasks, and has for itsprincipal objectl to provide an improved flask in which integral orlixed cross bars are dispensed with, and bars are used which may bequickly and readily removed or inserted. My invent1on generally pertainsto the cope, and 1t may be used in conjunction with the `drag if sodesired.

In the drawings- Figure l is a plan view of one form of my invention;

Fig. 2 is an end elevation of the same;

Fig. 3 is an end elevation, a portion thereof being shown in section;

Fig. l is a perspective of one of the locking wedges;

Fig. 5 is a perspective detail of one of the ibar sockets;

Fig. 6 is a plan view of a detail of a modiiied form of my invention;and

Fig. 7 is a view similar to Fig. 3 of the construction shown in Fig. 6.

Like numerals refer to like elements throughout the drawing. l0indicates generally the flask frame provided with trunnions 10a, or thelike, as is customary in foundry practice. Located on opposite innerfaces of a pair of ends of the frame 10 are the sockets generallyindicated by 11, see Fig. 5, for example, consisting of a vertical rib11a having an overhanging top lug or portion 1lb, a bottom portion 11,and an inclined rib 11d. Removable cross bars of metal or the like,indicated by numeral l2, extend across between corresponding socketmembers ll. In placing the bars they are inclined sufliciently to clearthe top lugs portion llb and dropped into the sockets, after whichlocking wedges 13, shown in Fig. 4:, are driven lio-me, as shown in Fig.3, for example, locking the bars in osition beneath the lugs portion11b, there y preventing their accidental displacement.

rlhe function of these bars is to hold the sand against dropping duringmolding or casting, and the same are generally used with a cope as iswell known, although it is obvious that my invention may be applied tothe drag if it becomes advisable.

In present day constructions the bars are formed integral with the flaskframe, or are bolted or riveted in place, as a result of which it isimpossible to readily remove them for use in other flasks or forreplacement, and they transmit strains, due to ex pansion orcontraction, to the frame. My invention overcomes this objection, andenables the use of the flask at shorter intervals.

In Figs. 6 and 7 I have shown a modified form in which the top lugs 1lbof the sockets is dispensed with, the construction in other respectsbeing' the same. This construction is preferable for use in making steelcastings, for example, or in other processes where it is advisable tobake the mold prior to casting. In this latter construction, the barsmay be removed by direct lift without having to slant them for lifting.It will be obvious that where the bars are made a part of the mold itwill be possible to remove the entire mold fromthe flask frame by theuse of the form shown in Figs. 6 and 7 to permit the use of such framewith other bars, there by reducing the number of flasks required wherevarious styles of castings are made.

`It will be obvious that my invention is susceptible of modication andimprove ment, and I do not wish to be restricted to the form shown anddescribed except as defined in the appended claims.

What I claim is:

l. In combination, a flask comprising an integral metal frame havingintegrally pro* jecting ribs on the inner walls thereof forming socketsclosed at the bottom, and removable metal bars fitting at theirextremities in said sockets.

2. In combination, a flask comprising an integral metal frame havingintegrally projecting ribs on the inner walls thereof form ing socketsclosed at the bottom, removable metal bars fitting at their extremitiesin said sockets, and locking members fitting in said sockets andcoacting therewith to lock said bars in place.

3. In combination, a flask comprising an integral metal frame havingintegrally proj ecting ribs on the inner vwalls thereof forming socketsclosed at the bottom, lugs projecting partially over said sockets,movable metal bars fitting at their extremities in said sockets, andmeans to lock said bars in said sockets beneath said lugs.

In testimony whereof, I have subscribed my name.

THOMAS F. JENNINGS.

